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