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