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