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