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)(20,29)(21,26)(22,30)(23,25)(27,32)(28,31)(33,34)(35,44)(36,46)(37,41)(38,45)(39,40)(42,47)(43,48) involution — undirected(2,7)(4,12)(8,14)(10,13)(17,19,23,20)(18,24,25,29)(21,30,31,27)(22,28,32,26)(34,40)(35,37)(42,46)(43,45)(2,7)(3,11)(9,16)(10,13)(18,25)(19,20)(26,28)(27,30)(33,35,39,37)(34,41,40,44)(36,43,47,45)(38,42,48,46)(1,3,6,11)(2,8,7,14)(4,10,12,13)(5,9,15,16)(17,20,23,19)(18,24,25,29)(21,30,31,27)(22,26,32,28)(33,36,39,47)(34,42,40,46)(35,45,37,43)(38,44,48,41)(1,4)(2,9)(3,10)(5,14)(6,12)(7,16)(8,15)(11,13)(17,21,23,31)(18,26,25,28)(19,27,20,30)(22,24,32,29)(33,37,39,35)(34,41,40,44)(36,43,47,45)(38,46,48,42)(1,5,6,15)(2,10,7,13)(3,9,11,16)(4,8,12,14)(17,22,23,32)(18,27,25,30)(19,28,20,26)(21,29,31,24)(33,38)(34,43)(35,42)(36,44)(37,46)(39,48)(40,45)(41,47)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.