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