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