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