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