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