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