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