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