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