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