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