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