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