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