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