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