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