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