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