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