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