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