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