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