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