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