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)(18,23)(19,25)(24,27)(26,31)(33,34)(35,40)(36,41)(37,39)(38,42)(43,46)(44,48)(45,47)(1,3,6,5)(2,7,8,10)(4,13,14,11)(9,16,12,15)(17,18,22,23)(19,21,25,30)(20,27,28,24)(26,32,31,29)(33,35,39,42)(34,40,37,38)(36,44,47,43)(41,48,45,46)(2,8)(7,10)(9,12)(15,16)(20,28)(24,27)(26,31)(29,32)(34,37)(35,42)(41,45)(43,44) involution — undirected(1,4,6,14)(2,9,8,12)(3,11,5,13)(7,15,10,16)(17,19)(18,21)(20,26)(22,25)(23,30)(24,29)(27,32)(28,31)(33,36,39,47)(34,41,37,45)(35,43,42,44)(38,48,40,46)(1,2)(3,10)(4,9)(5,7)(6,8)(11,16)(12,14)(13,15)(17,20)(18,24)(19,26)(21,29)(22,28)(23,27)(25,31)(30,32)(33,37,39,34)(35,40,42,38)(36,45,47,41)(43,46,44,48)(1,5,6,3)(2,7,8,10)(4,11,14,13)(9,16,12,15)(17,21)(18,25)(19,23)(20,29)(22,30)(24,31)(26,27)(28,32)(33,38,39,40)(34,42,37,35)(36,46,47,48)(41,43,45,44)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.