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