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