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