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