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