One vertex per element, one color per generator, with an edge from x to x·s.
(1,2,7,16,5,10,6,9)(3,4,12,15,8,14,11,13)(17,18)(19,26,21,24)(20,25)(22,28)(23,27)(29,38,32,41)(30,44,35,39)(31,40,47,48)(33,43)(34,42)(36,46)(37,45)(1,3,5,8)(2,4,10,14)(6,12,7,11)(9,15,16,13)(17,19,23,21)(18,24,27,26)(20,31,33,47)(22,35,37,30)(25,40,43,48)(28,44,45,39)(29,36,32,34)(38,46,41,42)(1,4)(2,8)(3,10)(5,14)(6,15)(7,13)(9,11)(12,16)(17,20)(18,25)(19,29)(21,32)(22,36)(23,33)(24,38)(26,41)(27,43)(28,46)(30,47)(31,35)(34,37)(39,48)(40,44)(42,45) involution — undirected(6,7)(9,16)(11,12)(13,15)(17,21,23,19)(18,26,27,24)(20,32,33,29)(22,35,37,30)(25,41,43,38)(28,44,45,39)(31,34,47,36)(40,42,48,46)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.