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