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