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