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