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