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