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