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