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