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