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