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