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