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)(19,24)(20,23)(21,34)(22,27)(25,31)(26,32)(28,38)(29,35)(30,44)(33,37)(36,45)(39,43)(40,42)(41,46)(47,48) involution — undirected(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)(20,31)(21,32)(24,35)(25,26)(27,37)(29,43)(30,42)(33,45)(34,36)(38,46)(39,40)(41,48)(44,47)(2,8)(6,9)(7,16)(14,15)(17,19)(18,24)(20,29)(21,30)(22,28)(23,35)(25,39)(26,40)(27,38)(31,43)(32,42)(33,41)(34,44)(36,47)(37,46)(45,48) involution — undirected(19,28)(24,38)(29,41)(30,42)(35,46)(39,47)(40,44)(43,48) 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.