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