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