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