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