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