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