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