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