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