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