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