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