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