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)(17,18,22,25)(19,26,30,24)(20,21,31,23)(27,29,28,32)(2,6)(7,8)(9,11,12,16)(10,13,14,15)(17,19)(18,24)(20,28)(21,29)(22,30)(23,32)(25,26)(27,31)(1,3,5,4)(2,7,6,8)(10,14)(11,16)(17,20)(18,21)(19,27)(22,31)(23,25)(24,32)(26,29)(28,30)(1,3,5,4)(2,7,6,8)(10,14)(13,15)(17,18)(19,28)(20,21)(22,25)(23,31)(24,32)(26,29)(27,30)(1,4,5,3)(2,7,6,8)(10,14)(13,15)(17,21,22,23)(18,20,25,31)(19,29,30,32)(24,28,26,27)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.