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