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