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