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