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