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