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