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