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