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