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