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