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