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