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