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