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