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