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