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