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