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