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