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