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