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