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