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