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)(14,17)(15,19)(21,22,24,27)(23,29,31,26)(25,28,32,35)(30,36,33,34)(6,9)(10,12)(13,14,16,17)(15,18,19,20)(23,30)(25,32)(26,34)(28,35)(29,36)(31,33)(7,11)(10,12)(13,15)(14,18)(16,19)(17,20)(21,23,24,31)(22,26,27,29)(25,33,32,30)(28,36,35,34)(2,4)(5,7,8,11)(6,10,9,12)(15,19)(18,20)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.