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