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