One vertex per element, one color per generator, with an edge from x to x·s.
(1,2,6,11,7,12,5,8)(3,13,15,9,16,24,22,26)(4,17,20,23,21,10,19,28)(14,27,18,25,29,30,31,32)(2,8,12,11)(9,24,26,13)(10,23,17,28)(25,30,32,27)(1,3,6,15,7,16,5,22)(2,9,8,13,12,26,11,24)(4,18,20,29,21,31,19,14)(10,27,23,32,17,30,28,25)(1,4,5,19,7,21,6,20)(2,10,11,28,12,17,8,23)(3,14,15,18,16,29,22,31)(9,25,13,27,26,32,24,30)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.