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