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