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