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)(19,22)(20,27)(21,25)(23,26)(24,30)(28,29)(31,32)(2,5)(3,8)(9,11,12,15)(10,13,14,16)(17,19,22,18)(20,28,30,32)(21,25,23,26)(24,29,27,31)(10,14)(13,16)(17,20,22,30)(18,24,19,27)(21,29,23,31)(25,32,26,28)(1,3,4,8)(2,6,5,7)(10,14)(13,16)(17,21,22,23)(18,25,19,26)(20,29,30,31)(24,32,27,28)(18,19)(24,27)(25,26)(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.