One vertex per element, one color per generator, with an edge from x to x·s.
(1,2)(3,12)(4,9)(5,10)(6,15)(7,11)(8,13)(14,16)(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)(2,8,11,16)(5,13,6,14)(9,15,12,10)(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)(2,9,11,12)(5,13,6,14)(8,15,16,10)(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)(2,10,11,15)(3,13,4,14)(8,9,16,12)(20,35)(25,41)(30,45)(34,42)(36,37)(38,44)(43,48)(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.