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