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