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