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