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)(11,16)(12,14)(13,15)(18,19)(20,24)(27,31)(29,32)(1,3,6,4)(2,7,8,5)(9,11,13,12)(10,14,15,16)(18,19)(22,23)(25,26,28,30)(27,29,31,32)(2,8)(3,4)(10,15)(14,16)(17,18,21,19)(20,22,24,23)(1,4,6,3)(2,7,8,5)(9,10)(11,14)(12,16)(13,15)(17,19,21,18)(20,23,24,22)(25,27)(26,29)(28,31)(30,32)(1,5,6,7)(2,4,8,3)(9,12,13,11)(10,14,15,16)(17,20,21,24)(18,22,19,23)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.