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