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