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