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