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