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