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