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