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