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)(21,22,25,29,27,30,26,23)(24,32,35,28,34,31,33,36)(1,2)(3,4)(6,11)(7,9)(12,16)(13,14)(15,18)(19,20)(21,23,26,30,27,29,25,22)(24,28,33,32,34,36,35,31)(2,4)(5,7,10,9)(6,11,14,13)(8,15,17,18)(12,16,19,20)(21,24)(22,28)(23,31)(25,33)(26,35)(27,34)(29,32)(30,36)(5,8,10,17)(6,12,14,19)(7,15,9,18)(11,16,13,20)(21,25,27,26)(22,29,30,23)(24,33,34,35)(28,32,36,31)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.