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