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