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