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