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