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