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