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