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