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