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