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