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