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