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