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