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