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