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