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