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