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