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