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