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