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