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