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