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