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