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