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)(8,21,24,29,22,35,23,13)(18,32,33,36,34,26,31,30)(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)(22,34)(23,31)(24,33)(7,17,19,20)(8,22)(12,16,27,28)(13,29)(18,33,34,31)(21,35)(23,24)(26,36,32,30)(1,3,4,2)(5,8,9,23,11,22,10,24)(6,13,14,21,15,29,25,35)(7,18,17,31,19,34,20,33)(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.