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