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)(15,18)(16,20)(17,19)(21,22,24,27)(23,29,31,26)(25,28,33,35)(30,34,32,36)(5,7,9,12)(6,10,8,11)(13,15,17,16)(14,18,19,20)(21,23,24,31)(22,26,27,29)(25,30,33,32)(28,36,35,34)(5,6,9,8)(7,10,12,11)(13,16,17,15)(14,18,19,20)(22,27)(23,30)(25,33)(26,34)(29,36)(31,32)(2,4)(5,8,9,6)(7,10,12,11)(22,27)(23,31)(28,35)(30,32)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.