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