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