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