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