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