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