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