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