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