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