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