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