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