One vertex per element, one color per generator, with an edge from x to x·s.
(1,2)(3,11)(4,9)(5,8)(6,10)(7,13)(12,15)(14,16)(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)(1,3)(2,7)(4,14)(5,13)(6,12)(8,15)(9,11)(10,16)(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(2,8)(4,5)(7,15)(9,10)(11,16)(13,14) involution — undirected(3,12)(7,16)(11,15)(13,14)(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.