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