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