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