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