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