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