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