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