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