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