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