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