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