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