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)(11,14)(12,15)(13,16)(17,18,22,25)(19,26,29,31)(20,24,21,30)(23,27,32,28)(9,11)(10,13)(12,16)(14,15)(17,19,21,28,22,29,20,27)(18,23,24,26,25,32,30,31)(2,5)(6,8)(11,16)(13,14)(17,18)(19,23)(20,30)(21,24)(22,25)(26,28)(27,31)(29,32) involution — undirected(1,3,4,7)(2,6,5,8)(9,11)(10,14)(12,16)(13,15)(17,20,22,21)(18,24,25,30)(19,27,29,28)(23,26,32,31)(11,16)(13,14)(17,20,22,21)(18,24,25,30)(19,28,29,27)(23,31,32,26)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.