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