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