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