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