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