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