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