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