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