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