The generator matrix

 1  0  0  0  1  1  1  1  1  4  1  4  1  6  6  1  0  1  4  0  1  6  1  6  1  1  1  1  2  4  1  0  1  1  0  1  4  0  2  1  6  1  1  1  4  4  1  2  1  4  4  1  6  1  1  1  1  1  1  2  1  2  0  0  1  4  1
 0  1  0  0  0  0  0  1  7  1  3  1  3  1  2  2  1  7  6  1  5  1  1  6  4  2  5  5  1  1  6  4  4  5  1  4  6  2  1  2  1  3  5  7  6  1  0  6  0  1  1  1  6  7  4  0  1  3  3  1  4  0  4  0  7  1  2
 0  0  1  0  0  1  3  1  0  3  3  6  4  5  1  0  2  6  1  2  3  1  6  6  5  2  4  1  7  0  5  1  0  7  1  5  1  6  4  4  1  5  2  4  1  0  5  0  1  3  2  3  1  5  1  3  2  5  4  6  5  1  2  1  2  3  6
 0  0  0  1  3  3  6  4  2  2  7  1  5  3  1  3  7  2  2  6  6  2  5  1  1  6  2  2  1  2  7  3  5  3  4  0  7  1  7  6  4  6  4  0  4  6  3  1  6  1  0  3  1  3  4  4  1  1  3  3  3  3  1  6  4  7  5
 0  0  0  0  4  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  4  4  4  4  4  4  4  4  4  4  4  4  4  4  4  4  4  0  4  4  4  4  0  4  0  4  4  4  4  0  4  4  4  4  4  0
 0  0  0  0  0  4  0  0  0  0  4  4  4  4  4  4  0  4  4  4  4  4  0  4  4  0  0  0  0  4  0  0  4  4  4  0  4  0  4  0  4  0  0  4  4  4  4  0  0  0  0  0  4  0  0  4  4  4  0  0  0  0  0  4  0  4  0
 0  0  0  0  0  0  4  0  4  4  4  4  0  0  4  4  4  4  0  0  0  4  0  0  4  4  0  4  4  4  0  4  0  0  0  4  0  0  4  0  4  4  0  0  4  0  0  4  0  0  4  0  0  4  0  4  0  4  0  0  0  0  0  4  0  4  4

generates a code of length 67 over Z8 who´s minimum homogenous weight is 58.

Homogenous weight enumerator: w(x)=1x^0+327x^58+460x^59+1147x^60+1100x^61+1973x^62+1812x^63+2695x^64+2300x^65+2977x^66+2928x^67+3389x^68+2496x^69+2615x^70+1760x^71+1872x^72+1024x^73+977x^74+324x^75+341x^76+116x^77+72x^78+12x^79+24x^80+4x^81+15x^82+3x^84+3x^86+1x^94

The gray image is a code over GF(2) with n=268, k=15 and d=116.
This code was found by Heurico 1.16 in 38 seconds.