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