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