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