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