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