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