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