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