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