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