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