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