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