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