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)(11,15)(12,14)(13,16)(17,18,22,23,21,25,19,26)(20,28,30,32,29,24,27,31)(2,5)(3,7)(11,16)(13,15)(20,29)(24,28)(27,30)(31,32) involution — undirected(9,11,12,16)(10,13,14,15)(17,19,21,22)(18,23,25,26)(20,30,29,27)(24,32,28,31)(1,3,4,7)(2,6,5,8)(10,14)(13,15)(17,20)(18,24)(19,27)(21,29)(22,30)(23,31)(25,28)(26,32)(2,5)(6,8)(20,29)(24,28)(27,30)(31,32) 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.