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