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