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)(21,22,26,29)(23,27,25,34)(24,31,32,36)(28,30,35,33)(1,2)(3,4)(5,7,9,14)(6,10,13,11)(8,17,18,15)(12,20,16,19)(21,23,26,25)(22,27,29,34)(24,30,32,33)(28,31,35,36)(5,7)(6,11)(8,15)(9,14)(10,13)(12,20)(16,19)(17,18)(21,24,25,33,26,32,23,30)(22,28,27,31,29,35,34,36)(2,4)(7,14)(10,11)(15,17)(19,20)(21,23,26,25)(22,27,29,34)(24,30,32,33)(28,31,35,36)(5,8,9,18)(6,12,13,16)(7,15,14,17)(10,19,11,20)(24,32)(28,35)(30,33)(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.