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