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