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