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