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