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