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)(19,24,28,21)(20,31,30,26)(22,32,29,27)(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)(20,29)(21,25)(22,30)(23,28)(26,32)(27,31)(34,40)(35,37)(42,46)(43,45) involution — undirected(2,3)(7,9)(8,10)(14,15)(18,25)(19,28)(20,30)(27,32)(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)(17,20,23,30)(18,26,25,31)(19,29,28,22)(21,27,24,32)(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)(18,19)(20,27)(22,31)(23,24)(25,28)(26,29)(30,32)(33,37,39,35)(34,41,40,36)(38,45,47,43)(42,48,46,44)(1,5)(2,8)(3,10)(4,12)(6,13)(7,14)(9,15)(11,16)(17,22,23,29)(18,27,25,32)(19,30,28,20)(21,26,24,31)(33,38,39,47)(34,42,40,46)(35,43,37,45)(36,44,41,48)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.