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