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