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