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)(23,27)(24,31)(25,34)(26,29)(28,30)(32,36)(33,35)(5,6,9,12)(7,14,13,19)(8,17,16,10)(11,18,20,15)(21,23,26,25)(22,27,29,34)(24,32,33,30)(28,31,36,35)(21,24,26,33)(22,28,29,36)(23,30,25,32)(27,35,34,31)(5,7,9,13)(6,11,12,20)(8,18,16,15)(10,19,17,14)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.