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