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