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