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