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