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