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