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