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