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