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