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