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