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)(11,15,13,16)(17,18,20,22)(19,23,24,21)(25,26,29,31)(27,32,30,28)(1,2)(3,5)(4,6)(7,8)(9,11,14,13)(10,15,12,16)(17,18)(19,21)(20,22)(23,24)(25,27,29,30)(26,28,31,32)(1,3,4,8)(2,5,6,7)(9,11,14,13)(10,16,12,15)(17,18)(19,23)(20,22)(21,24)(25,28,29,32)(26,30,31,27)(1,2)(3,5)(4,6)(7,8)(9,12,14,10)(11,15,13,16)(1,3)(2,5)(4,8)(6,7)(9,13,14,11)(10,15,12,16)(17,19)(18,21)(20,24)(22,23)(25,26)(27,28)(29,31)(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.