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