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