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