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