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