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