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