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