in this program I have memory error

The program is:

sage: G=SL(3,GF(3)) sage: G.order() sage: element=G sage: Z=G.center() sage: A=matrix(G.order())

sage: for i in range( G.order()): for j in range(G.order()): if element[i]element[j]<>element[j]element[i]: A[i,j]=1 sage: graph=Graph(A);graph

graph memory error

pleace, we can help me for my resarch.