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