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