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