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