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