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