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