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