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