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