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