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