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