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