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