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