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