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