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