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