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