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