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