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