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