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