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