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