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