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