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