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