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