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