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