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