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