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