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