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