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