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