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