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