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