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