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