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)(17,18,23,27,24,28,22,26)(19,29,30,32,20,25,31,21)(10,13)(11,15)(17,19,24,20)(18,21,28,32)(22,30,23,31)(25,26,29,27)(1,3,5,4)(2,6,7,8)(9,10)(11,14)(12,13)(15,16)(17,20,24,19)(18,25,28,29)(21,26,32,27)(22,30,23,31)(10,13)(14,16)(17,21,22,25,24,32,23,29)(18,20,26,30,28,19,27,31)(1,4,5,3)(2,6,7,8)(9,11,12,15)(10,14,13,16)(17,22,24,23)(18,26,28,27)(19,30,20,31)(21,29,32,25)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.