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