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