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