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