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