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