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