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