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