One vertex per element, one color per generator, with an edge from x to x·s.
(5,6,11,17,10,18,12,16)(7,19,22,34,23,13,21,33)(8,24,31,20,27,35,26,14)(9,28,32,15,30,25,29,36)(1,2)(3,4)(5,7,11,21,10,23,12,22)(6,13,16,33,18,19,17,34)(8,25,26,36,27,28,31,15)(9,24,29,20,30,35,32,14)(2,4)(5,8,11,31,10,27,12,26)(6,14,17,24,18,20,16,35)(7,15,22,25,23,36,21,28)(9,13,32,33,30,19,29,34)(5,9,11,29,10,30,12,32)(6,15,16,25,18,36,17,28)(7,20,21,35,23,14,22,24)(8,19,26,34,27,13,31,33)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.