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