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