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