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