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