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