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