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