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