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