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