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