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