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