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