One vertex per element, one color per generator, with an edge from x to x·s.
(1,2)(3,4)(5,6,9,12,10,7,8,11)(13,14,18,24,19,22,17,23)(15,25,28,36,29,20,27,37)(16,30,33,39,34,21,32,40)(26,35,42,44,43,41,31,38)(2,4)(5,7,10,6)(8,12,9,11)(13,15,19,29)(14,20,22,25)(16,31,34,42)(17,28,18,27)(21,38,30,44)(23,37,24,36)(26,33,43,32)(35,40,41,39)(6,11)(7,12)(8,9)(13,16,19,34)(14,21,22,30)(15,26,29,43)(17,33,18,32)(20,35,25,41)(23,40,24,39)(27,42,28,31)(36,44,37,38)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.