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