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