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