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