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