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