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)(7,18,26,30,20,15,9,13)(8,21,23,31,24,14,28,33)(19,32,35,29,22,34,25,36)(5,7,10,9,11,20,12,26)(6,13,16,18,17,30,27,15)(8,22,28,35,24,19,23,25)(14,29,33,34,21,36,31,32)(5,8,10,28,11,24,12,23)(6,14,16,33,17,21,27,31)(7,19,9,25,20,22,26,35)(13,29,18,34,30,36,15,32)(2,4)(5,9,10,20,11,26,12,7)(6,15,16,13,17,18,27,30)(8,22,23,25,24,19,28,35)(14,29,31,32,21,36,33,34)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.