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