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)(18,21)(19,25)(24,29)(26,31)(34,38)(35,36)(42,45)(43,44) involution — undirected(3,9)(7,13)(10,15)(14,16)(17,18,22,21)(19,23,25,27)(20,24,28,29)(26,30,31,32)(33,34,39,38)(35,41,36,40)(37,42,46,45)(43,48,44,47)(2,6)(7,13)(8,11)(14,16)(20,28)(24,29)(26,31)(30,32)(33,35,39,36)(34,40,38,41)(37,44,46,43)(42,48,45,47)(1,3,5,9)(2,7,6,13)(4,10,12,15)(8,14,11,16)(17,19)(18,23)(20,26)(21,27)(22,25)(24,30)(28,31)(29,32)(33,36,39,35)(34,41,38,40)(37,44,46,43)(42,48,45,47)(1,2)(3,7)(4,8)(5,6)(9,13)(10,14)(11,12)(15,16)(17,20)(18,24)(19,26)(21,29)(22,28)(23,30)(25,31)(27,32)(33,37,39,46)(34,42,38,45)(35,43,36,44)(40,47,41,48)(1,4)(2,8)(3,10)(5,12)(6,11)(7,14)(9,15)(13,16)(17,21,22,18)(19,27,25,23)(20,29,28,24)(26,32,31,30)(33,38,39,34)(35,41,36,40)(37,45,46,42)(43,48,44,47)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.