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