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