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