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)(17,18,23,24,22,27,21,28)(19,29,36,41,31,25,32,38)(20,33,37,42,35,26,34,39)(30,40,46,47,45,43,44,48)(1,3,4,8)(2,5,6,7)(9,10)(11,15)(12,14)(13,16)(18,24)(20,34)(21,23)(25,38)(27,28)(29,41)(30,44)(32,36)(35,37)(39,42)(45,46)(47,48)(2,6)(5,7)(9,11,12,16)(10,13,14,15)(17,19)(18,25)(20,30)(21,32)(22,31)(23,36)(24,38)(26,40)(27,29)(28,41)(33,43)(34,44)(35,45)(37,46)(39,47)(42,48)(3,8)(5,7)(11,16)(13,15)(17,20,21,34,22,35,23,37)(18,26,28,42,27,33,24,39)(19,30,32,44,31,45,36,46)(25,40,41,48,29,43,38,47)(10,14)(13,15)(18,27)(19,31)(20,35)(24,28)(32,36)(34,37)(40,43)(47,48) involution — undirectedA 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.