the 1 isometry classes of irreducible [11,8,3]_3 codes are:

code no       1:
================
1 1 1 2 0 0 0 0 0 0 0
1 1 0 0 2 0 0 0 0 0 0
2 1 0 0 0 2 0 0 0 0 0
1 0 1 0 0 0 2 0 0 0 0
2 0 1 0 0 0 0 2 0 0 0
0 1 1 0 0 0 0 0 2 0 0
2 1 1 0 0 0 0 0 0 2 0
0 2 1 0 0 0 0 0 0 0 2
the automorphism group has order 72
and is strongly generated by the following 5 elements:
(
2 0 0 
0 1 0 
0 0 1 
, 
1 0 0 
0 2 0 
0 1 1 
, 
2 0 0 
2 1 1 
2 2 0 
, 
2 0 0 
0 0 2 
0 2 0 
, 
0 1 2 
0 0 1 
1 0 1 
)
acting on the columns of the generator matrix as follows (in order):
(4, 10)(5, 6)(7, 8), 
(3, 9)(4, 7)(5, 6)(8, 10), 
(2, 8, 10)(3, 4, 5)(6, 7, 9), 
(2, 3)(5, 7)(6, 8), 
(1, 11)(2, 5, 7, 3)(6, 10, 8, 9)
orbits: { 1, 11 }, { 2, 10, 3, 4, 8, 6, 9, 5, 7 }