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