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