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