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