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