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