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