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