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