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