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