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