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