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)(21,22,26,30,25,29,32,35)(23,31,33,28,24,27,34,36)(5,7,16,19,10,8,9,17)(6,11,20,18,12,13,14,15)(21,23,32,34,25,24,26,33)(22,27,35,28,29,31,30,36)(2,4)(6,12)(11,13)(14,20)(15,18)(21,24,25,23)(22,28,29,36)(26,33,32,34)(27,30,31,35)(5,8,9,19,10,7,16,17)(6,13,14,18,12,11,20,15)(22,29)(27,31)(28,36)(30,35)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.