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)(17,18,22,25)(19,23,26,30)(20,24,29,21)(27,31,32,28)(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)(17,19)(18,23)(20,27)(21,28)(22,26)(24,31)(25,30)(29,32)(34,36)(39,41)(40,44)(47,48) involution — undirected(2,4)(3,9)(5,13)(14,16)(19,26)(20,29)(21,24)(23,30)(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)(17,20,22,29)(18,24,25,21)(19,27,26,32)(23,31,30,28)(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)(17,21,22,24)(18,20,25,29)(19,28,26,31)(23,27,30,32)(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)(17,19)(18,23)(20,27)(21,28)(22,26)(24,31)(25,30)(29,32)(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.