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