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