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