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