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