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