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