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