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