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)(17,18)(19,23)(20,29)(21,28)(22,24)(25,30)(26,32)(27,31)(33,34)(35,42)(36,40)(37,39)(38,41)(43,48)(44,47)(45,46) involution — undirected(1,3,7,12)(2,8,11,16)(4,15,9,6)(5,10,14,13)(17,19,22,27)(18,23,24,31)(20,28,30,26)(21,25,32,29)(34,37)(40,42)(41,45)(47,48)(3,12)(6,15)(8,16)(10,13)(18,24)(19,27)(25,29)(26,28)(33,35,39,36)(34,40,37,42)(38,44,46,43)(41,48,45,47)(1,4)(2,5)(3,6)(7,9)(8,13)(10,16)(11,14)(12,15)(17,20)(18,25)(19,28)(21,31)(22,30)(23,32)(24,29)(26,27)(33,36,39,35)(34,40,37,42)(38,44,46,43)(41,47,45,48)(1,5)(2,9)(3,13)(4,11)(6,16)(7,14)(8,15)(10,12)(17,21,22,32)(18,26,24,28)(19,29,27,25)(20,23,30,31)(33,37,39,34)(35,42,36,40)(38,45,46,41)(43,48,44,47)(1,6)(2,10)(3,4)(5,16)(7,15)(8,14)(9,12)(11,13)(17,18)(19,23)(20,25)(21,26)(22,24)(27,31)(28,32)(29,30)(33,38,39,46)(34,41,37,45)(35,43,36,44)(40,47,42,48)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.