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