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