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