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