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