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