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