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