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