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