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