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