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