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)(17,18,23,25)(19,26,22,24)(20,21,30,31)(27,28,29,32)(33,34)(35,37)(36,40)(38,41)(39,43)(42,45)(44,48)(46,47)(1,2)(3,6)(4,7)(5,8)(9,12)(10,14)(11,15)(13,16)(17,19,23,22)(18,24,25,26)(20,29,30,27)(21,28,31,32)(33,35)(34,39)(36,42)(37,41)(38,43)(40,47)(44,46)(45,48)(2,3)(7,9)(8,10)(15,16)(18,25)(20,30)(24,26)(27,29)(36,44)(40,48)(42,46)(45,47) involution — undirected(1,3,6,2)(4,9,12,7)(5,8,14,10)(11,15,13,16)(17,20)(18,21)(19,27)(22,29)(23,30)(24,32)(25,31)(26,28)(33,36,38,44)(34,40,41,48)(35,42,43,46)(37,45,39,47)(1,4,6,12)(2,7,3,9)(5,13,14,11)(8,16,10,15)(17,21)(18,20)(19,28)(22,32)(23,31)(24,29)(25,30)(26,27)(33,37,38,39)(34,35,41,43)(36,45,44,47)(40,42,48,46)(1,5,6,14)(2,8,3,10)(4,11,12,13)(7,15,9,16)(17,22,23,19)(18,24,25,26)(20,27,30,29)(21,28,31,32)(33,35)(34,37)(36,46)(38,43)(39,41)(40,47)(42,44)(45,48)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.