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