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