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