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