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