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