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)(11,15)(12,16)(13,14)(17,18,22,24)(19,20,23,21)(26,30)(28,32)(1,3,6,4)(2,7,8,5)(10,14)(12,15)(17,19,22,23)(18,20,24,21)(2,8)(3,4)(9,11,13,16)(10,12,14,15)(17,20,22,21)(18,19,24,23)(25,26,29,30)(27,28,31,32)(1,4,6,3)(2,7,8,5)(9,11)(10,15)(12,14)(13,16)(17,21,22,20)(18,23,24,19)(25,27,29,31)(26,28,30,32)(1,5,6,7)(2,3,8,4)(9,12,13,15)(10,11,14,16)(17,18)(19,20)(21,23)(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.