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