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