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