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)(7,12)(11,15)(13,16)(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(1,3,6,13)(2,7,9,15)(4,12,5,11)(8,16,14,10)(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)(4,5)(8,14)(10,16)(11,12)(17,20)(18,25)(19,30)(21,36)(22,37)(23,35)(24,38)(26,34)(27,43)(28,42)(29,44)(31,46)(32,47)(33,45)(39,48)(40,41) involution — undirected(1,4,6,5)(2,8,9,14)(3,11,13,12)(7,10,15,16)(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.