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