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