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