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