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