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