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