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