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