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