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