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