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