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