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