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