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