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