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