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