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