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