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