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