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