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