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)(23,30)(24,34)(25,35)(26,29)(27,33)(28,31)(32,36)(5,7)(6,8)(9,12)(10,11)(13,15)(14,17)(16,20)(18,19)(21,23,26,33)(22,27,29,30)(24,32,25,31)(28,35,36,34)(5,8,10,9)(6,11,12,7)(15,20)(17,19)(21,24,23,31,26,25,33,32)(22,28,27,34,29,36,30,35)(5,9,10,8)(6,11,12,7)(14,18)(15,20)(21,25,33,31,26,24,23,32)(22,28,30,35,29,36,27,34)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.