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