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