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