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