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