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