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