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