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