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