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