One vertex per element, one color per generator, with an edge from x to x·s.
(1,2,6,12,8,11,7,3)(4,13,17,9,19,27,18,15)(5,20,21,26,23,14,22,10)(16,25,30,28,31,24,32,29)(1,3,6,11,8,12,7,2)(4,15,17,27,19,9,18,13)(5,14,21,26,23,20,22,10)(16,25,30,29,31,24,32,28)(1,4,6,17,8,19,7,18)(2,9,3,13,11,15,12,27)(5,16,21,30,23,31,22,32)(10,25,14,29,26,24,20,28)(1,5,6,21,8,23,7,22)(2,10,3,14,11,26,12,20)(4,16,17,30,19,31,18,32)(9,24,13,28,15,25,27,29)A Cayley diagram is a choice, not a fact about the group. Another drawing of this group — in a book, or on a different generating set — may look nothing like this one.