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