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