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