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