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