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