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