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)(23,32)(24,28)(25,30)(26,31)(27,35)(29,34)(33,36)(5,7,9,15,10,16,8,17)(6,11,12,14,13,20,18,19)(21,23,26,24)(22,28,31,32)(25,34,27,33)(29,30,36,35)(5,6)(7,11)(8,18)(9,12)(10,13)(14,15)(16,20)(17,19)(21,24,26,23)(22,29,31,36)(25,34,27,33)(28,30,32,35)(1,3,4,2)(5,8,10,9)(6,12,13,18)(7,15,16,17)(11,19,20,14)(21,25,26,27)(22,30,31,35)(23,33,24,34)(28,29,32,36)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.