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)(17,18,23,28)(19,29,32,39)(20,25,37,43)(21,26,22,27)(24,33,40,31)(30,45,47,41)(34,48,46,38)(35,42,36,44)(1,2)(3,7)(4,8)(5,13)(6,9)(10,14)(11,15)(12,16)(17,19)(18,24)(20,34)(21,33)(22,31)(23,32)(25,41)(26,29)(27,39)(28,40)(30,36)(35,47)(37,46)(38,42)(43,45)(44,48) involution — undirected(1,3)(2,7)(4,11)(5,14)(6,12)(8,15)(9,16)(10,13)(17,20)(18,25)(19,30)(21,36)(22,35)(23,37)(24,38)(26,44)(27,42)(28,43)(29,41)(31,34)(32,47)(33,46)(39,45)(40,48) involution — undirected(1,4,6,5)(2,8,9,13)(3,11,12,14)(7,15,16,10)(17,21,23,22)(18,26,28,27)(19,31,32,33)(20,35,37,36)(24,39,40,29)(25,42,43,44)(30,46,47,34)(38,41,48,45)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.