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