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