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