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