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)(19,25)(20,24)(21,23)(22,26)(27,31)(28,30)(29,32)(35,44)(37,47)(39,40)(42,48) involution — undirected(3,9)(7,13)(10,15)(14,16)(17,19,22,21)(18,23,26,25)(20,28,29,27)(24,31,32,30)(33,34,38,43)(35,40,44,39)(36,45,46,41)(37,42,47,48)(2,6)(7,13)(8,11)(14,16)(17,18,22,26)(19,23,21,25)(20,24,29,32)(27,30,28,31)(33,35,38,44)(34,39,43,40)(36,42,46,48)(37,41,47,45)(1,2)(3,7)(4,8)(5,6)(9,13)(10,14)(11,12)(15,16)(17,18)(19,23)(20,24)(21,25)(22,26)(27,30)(28,31)(29,32)(33,35)(34,40)(36,42)(37,41)(38,44)(39,43)(45,47)(46,48) involution — undirected(1,3,5,9)(2,7,6,13)(4,10,12,15)(8,14,11,16)(17,20,22,29)(18,24,26,32)(19,27,21,28)(23,30,25,31)(33,36,38,46)(34,41,43,45)(35,42,44,48)(37,39,47,40)(1,4)(2,8)(3,10)(5,12)(6,11)(7,14)(9,15)(13,16)(17,21,22,19)(18,25,26,23)(20,27,29,28)(24,30,32,31)(33,37)(34,42)(35,41)(36,40)(38,47)(39,46)(43,48)(44,45)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.