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