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