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)(7,13)(11,16)(12,15)(17,18,23,26)(19,29,33,40)(20,34,36,42)(21,28,22,27)(24,32,39,31)(25,37,41,35)(30,44,46,38)(43,47,48,45)(1,3,5,13,6,11,4,12)(2,7,8,10,9,15,14,16)(17,19,21,31,23,33,22,32)(18,24,27,29,26,39,28,40)(20,30,35,45,36,46,37,47)(25,38,34,43,41,44,42,48)(17,20)(18,25)(19,30)(21,35)(22,37)(23,36)(24,38)(26,41)(27,34)(28,42)(29,43)(31,45)(32,47)(33,46)(39,44)(40,48) involution — undirected(3,11)(7,15)(10,16)(12,13) involution — undirected(1,4,6,5)(2,8,9,14)(3,12,11,13)(7,10,15,16)(18,26)(24,39)(25,41)(27,28)(29,40)(34,42)(38,44)(43,48)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.