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