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)(11,15,16,13)(18,23)(19,20)(26,31)(28,29)(2,5)(6,8)(9,11,12,16)(10,13,14,15)(17,18)(19,27)(20,24)(21,23)(22,31)(25,29)(26,30)(28,32)(1,3,4,7)(2,6,5,8)(10,14)(11,16)(17,19)(18,24)(20,21)(22,28)(23,27)(25,31)(26,32)(29,30)(10,14)(13,15)(17,20,21,19)(18,25,23,32)(22,28,30,29)(24,26,27,31)(2,5)(6,8)(10,14)(13,15)(19,20)(24,27)(25,32)(28,29) 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.