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