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