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