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