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