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)(7,15,17,12,18,20,16,19)(21,22)(23,30)(24,28)(25,33)(26,29)(27,31)(32,35)(34,36)(1,2,3,4)(6,11)(8,9)(12,15)(13,14)(16,17)(19,20)(5,7,10,18)(6,12,13,19)(8,17,9,16)(11,15,14,20)(21,23)(22,27)(24,31)(25,34)(26,32)(28,35)(29,36)(30,33)(6,13)(11,14)(12,19)(15,20)(21,24,26,25)(22,28,29,33)(23,31,32,34)(27,35,36,30)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.