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