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)(9,12)(10,19)(11,15)(14,17)(18,20)(23,30)(27,35)(31,36)(32,33)(5,7,11,17)(6,12,15,20)(8,9,10,18)(13,14,19,16)(21,22,25,29)(23,31,30,36)(24,28,26,34)(27,32,35,33)(2,4)(5,8,11,10)(6,13,15,19)(7,9,17,18)(12,14,20,16)(21,23,25,30)(22,27,29,35)(24,33,26,32)(28,36,34,31)(5,9,11,18)(6,14,15,16)(7,8,17,10)(12,13,20,19)(21,24,25,26)(22,28,29,34)(23,32,30,33)(27,31,35,36)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.