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