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