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