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