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