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