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