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