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