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