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)(17,18,23,22)(19,24,26,21)(20,25,29,30)(27,31,32,28)(33,34)(35,39)(36,43)(37,40)(38,41)(42,47)(44,48)(45,46)(2,7)(3,10)(9,15)(11,13)(17,19,23,26)(18,24,22,21)(20,27,29,32)(25,31,30,28)(33,35,38,43)(34,39,41,36)(37,42,46,48)(40,47,45,44)(2,7)(4,8)(9,15)(12,16)(19,26)(21,24)(27,32)(28,31)(33,36,38,39)(34,35,41,43)(37,44,46,47)(40,42,45,48)(1,3)(2,8)(4,7)(5,13)(6,10)(9,12)(11,14)(15,16)(17,20)(18,25)(19,27)(21,28)(22,30)(23,29)(24,31)(26,32)(33,34)(35,36)(37,45)(38,41)(39,43)(40,46)(42,47)(44,48) involution — undirected(1,4,6,8)(2,3,7,10)(5,12,14,16)(9,11,15,13)(17,21)(18,19)(20,28)(22,26)(23,24)(25,27)(29,31)(30,32)(33,36)(34,35)(37,44)(38,39)(40,42)(41,43)(45,48)(46,47)(1,5)(2,9)(3,11)(4,12)(6,14)(7,15)(8,16)(10,13)(17,22,23,18)(19,21,26,24)(20,25,29,30)(27,31,32,28)(33,37)(34,40)(35,42)(36,44)(38,46)(39,47)(41,45)(43,48)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.