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