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