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