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