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