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