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