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