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