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