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