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