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