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