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