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