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