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