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