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