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