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