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