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