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