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