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