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