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