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