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