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