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