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