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