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