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