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