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