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