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)(19,26)(20,28)(21,25)(22,23)(24,31)(27,30)(29,32) involution — undirected(1,2)(3,6)(4,5)(7,8)(9,10,12,14)(11,13,16,15)(18,23)(19,25)(24,28)(27,29)(2,5)(6,8)(9,10)(11,13)(12,14)(15,16)(18,23)(21,26)(24,28)(30,32) involution — undirected(3,7)(6,8)(9,11,12,16)(10,13,14,15)(17,19,22,25)(18,21,23,26)(20,29,31,27)(24,32,28,30)(1,3)(2,6)(4,7)(5,8)(17,20,22,31)(18,24,23,28)(19,27,25,29)(21,30,26,32)(1,2)(3,6)(4,5)(7,8)(17,21)(18,25)(19,23)(20,30)(22,26)(24,29)(27,28)(31,32) 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.