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